US3091336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1961-03-27
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Granted: 1963-05-28
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Expires: 1981-03-27
Abstract
No abstract record available.
Inventors
- 👤 Hirs Gene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:55
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/09; B01D29/096
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
190 words
IN A FILTER APPARATUS INCLUDING A TANK, A WALL WITHIN AND DIVIDING SAID TANK INTO AN UPPER INLET CHAMBER FOR LIQUID TO BE FILTERED AND A LOWER OUTLET CHAMBER FOR FILTERED LIQUID, SAID WALL HAVING AN OPENING THEREIN ESTABLISHING COMMUNICATION BETWEEN SAID INLET CHAMBER AND SAID OUTLET CHAMBER, A LIQUID-PERVIOUS SUPPORT CARRIED BY THE WALL AT SAID OPENING, A LIQUID-PERVIOUS LOOPED BELT HAVING A LOWER PORTION DISPOSED WITHIN SAID INLET CHAMBER TO TRAVEL ALONG SAID WALL OVER SAID SUPPORT AND A RETURN PORTION OVERLYING SAID INLET CHAMBER, ACTUATABLE DRIVE MEANS FOR ADVANCING SAID BELT, A DISPOSABLE SHEET OF FILTER MEDIA GUIDED BY SAID BELT ON THE UNDERSIDE THEREOF DOWN INTO SAID INLET CHAMBER, ALONG SAID WALL, AND OUT OF SAID TANK, THE IMPROVEMENTS OF A PUMP HAVING ITS INLET IN COMMUNICATION WITH SAID OUTLET CHAMBER TO WITHDRAW FILTERED LIQUID THEREFROM, CONTROL MEANS RESPONSIVE TO A PREDETERMINED CLOGGING OF THE FILTER MEDIA PORTION OVERLYING SAID LIQUID-PERVIOUS SUPPORT, MEANS INTERPOSED BETWEEN THE OUTLET OF SAID PUMP AND THE LOWER CHAMBER FOR STORING A RESERVE OF LIQUID, A NORMALLY CLOSED VALVE INTERPOSED BETWEEN SAID STORAGE MEANS AND SAID LOWER CHAMBER, AND MEANS AC-
Claim 2
Dependent Claim
190 words
IN A FILTER APPARATUS INCLUDING A TANK, A WALL WITHIN AND DIVIDING SAID TANK INTO AN UPPER INLET CHAMBER FOR LIQUID TO BE FILTERED AND A LOWER OUTLET CHAMBER FOR FILTERED LIQUID, SAID WALL HAVING AN OPENING THEREIN ESTABLISHING COMMUNICATION BETWEEN SAID INLET CHAMBER AND SAID OUTLET CHAMBER, A LIQUID-PERVIOUS SUPPORT CARRIED BY THE WALL AT SAID OPENING, A LIQUID-PERVIOUS LOOPED BELT HAVING A LOWER PORTION DISPOSED WITHIN SAID INLET CHAMBER TO TRAVEL ALONG SAID WALL OVER SAID SUPPORT AND A RETURN PORTION OVERLYING SAID INLET CHAMBER, ACTUATABLE DRIVE MEANS FOR ADVANCING SAID BELT, A DISPOSABLE SHEET OF FILTER MEDIA GUIDED BY SAID BELT ON THE UNDERSIDE THEREOF DOWN INTO SAID INLET CHAMBER, ALONG SAID WALL, AND OUT OF SAID TANK, THE IMPROVEMENTS OF A PUMP HAVING ITS INLET IN COMMUNICATION WITH SAID OUTLET CHAMBER TO WITHDRAW FILTERED LIQUID THEREFROM, CONTROL MEANS RESPONSIVE TO A PREDETERMINED CLOGGING OF THE FILTER MEDIA PORTION OVERLYING SAID LIQUID-PERVIOUS SUPPORT, MEANS INTERPOSED BETWEEN THE OUTLET OF SAID PUMP AND THE LOWER CHAMBER FOR STORING A RESERVE OF LIQUID, A NORMALLY CLOSED VALVE INTERPOSED BETWEEN SAID STORAGE MEANS AND SAID LOWER CHAMBER, AND MEANS AC-
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-27 | 1966-11-26 | 1967-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-27 | 1970-11-26 | 1971-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-27 | 1974-11-26 | 1975-05-28 | $7700.00 | Window Closed / Lapsed |